Quick view Trex Trex Signature 6 ft Aluminum Rail Panel with 36 in. Square Balusters - Black $259.15 Trex Signature Pre-Assembled Aluminum Railing Panels make installation quick and easy. These panels feature 3/4 in. square aluminum balusters. This 6 ft panel is 72 in. x 36 in. Add to Cart Add to Wish list Compare